Turntable device for underground coal mine

Abstract

The utility model relates to the technical field of coal mine auxiliary transportation equipment, in particular to a turntable device for an underground coal mine, which comprises a mounting base, the mounting base is of an annular column structure and is mounted in a mounting hole of a roadway bottom plate, the upper surface of the mounting base is lower than that of the roadway bottom plate, and a hollow area in the middle of the mounting base is a driving reserved hole. A space formed by the upper surface of the mounting base and the mounting hole is a turntable reserved hole; the motor is connected with the speed reducer, the motor and the speed reducer are arranged in the drive reserved hole, and the motor is located below the speed reducer; the speed reducer is connected with the steering turntable through a flange, the speed reducer is located below the steering turntable, and the steering turntable is arranged in the turntable reserved hole; the rotating axes of the motor, the speed reducer and the steering rotating disc are coaxial. According to the turntable device for the underground coal mine, the motor and the speed reducer are used for directly driving the steering turntable to rotate, so that the maintenance cost of the turntable device is reduced while the steering stability is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of coal mine auxiliary transportation equipment, in particular to a turntable device for underground coal mines. Background Art

[0002] A rubber-tyred trackless vehicle is a rubber-wheeled transport vehicle that runs on the floor of an underground tunnel. It is mainly used to transport personnel, materials, and equipment. Compared with rail transport vehicles, it has the advantages of not requiring material transfer, fast transportation speed, and high flexibility. Based on the structural type, rubber-tyred trackless vehicles can be divided into centrally articulated trackless vehicles and integral trackless vehicles. Among them, the integral trackless vehicle adopts an integral chassis, which has a simple structure, is strong and durable, has a strong load-bearing capacity, and good transportation stability. However, due to the large turning radius of the integral trackless vehicle, in order to facilitate the turning or reversing of the integral trackless vehicle, it is generally necessary to set up a shunting chamber at regular intervals underground.

[0003] Coal pillars are left in the tunnels along the goaf. If a shunting chamber is built in the tunnel, the coal pillars left behind will easily lose their support strength, leading to roof collapse accidents. This will not only cause property damage but also seriously endanger the lives of underground personnel. The existing technology connects the hydraulic motor to the high-speed shaft of the worm gear reducer through a coupling, installs the transmission gear on the output shaft of the worm gear reducer, meshes the transmission gear with the gear turntable, and uses the hydraulic motor to drive the transmission gear to rotate. The transmission gear drives the gear turntable and the support seat and mobile bracket installed thereon to rotate, thereby realizing the rotation of a single-section equipment train. This device uses mutually meshing transmission gears and gear plates between the hydraulic motor and the support seat to indirectly drive the support seat to rotate, resulting in high maintenance costs and poor stability. Utility Model Content

[0004] In response to the technical problems in the prior art of turning devices using gear transmission that have high maintenance costs and poor stability, the turntable device for underground coal mines provided by the utility model uses a motor and a reducer to directly drive the steering turntable to rotate, thereby improving the steering stability while reducing the maintenance cost of the turntable device.

[0005] The technical solution of this utility model is as follows:

[0006] A turntable device for an underground coal mine includes a mounting base having an annular column structure and mounted in a mounting hole of a tunnel floor. The upper surface of the mounting base is lower than the upper surface of the tunnel floor. A hollow area in the middle of the mounting base serves as a drive reserved hole. The space formed by the upper surface of the mounting base and the mounting hole serves as a turntable reserved hole. The turntable reserved hole and the drive reserved hole are connected.

[0007] It also includes a motor, the output end of the motor is connected to the input end of the reducer, the motor and the reducer are installed in the drive reserved hole, and the motor is located below the reducer; the output end of the reducer is connected to the steering turntable through a flange, the reducer is located below the steering turntable, and the steering turntable is installed in the turntable reserved hole; the rotation axes of the motor, reducer and steering turntable are coaxial.

[0008] Furthermore, an annular support disc is coaxially disposed below the steering turntable and is rotatably connected to the steering turntable. The annular support disc is fixed to the upper end of the drive reserved hole, and the outer diameter of the annular support disc is no larger than that of the steering turntable, and the inner ring diameter of the annular support disc is no smaller than the diameter of the drive reserved hole.

[0009] Furthermore, the annular support plate is fixed to the upper surface of the mounting base.

[0010] Furthermore, inner rollers and outer rollers are respectively installed on the lower surface of the steering turntable, and inner annular guide rails and outer annular guide rails are coaxially arranged on the upper surface of the annular support plate. The outer annular guide rail is located on the outside of the inner annular guide rail, and the inner roller is installed in the inner annular guide rail, and the inner roller can rotate along the inner annular guide rail. The outer roller is installed in the outer annular guide rail, and the outer roller can rotate along the outer annular guide rail.

[0011] Furthermore, a gear sleeve is provided above the output end of the reducer, the gear sleeve is connected to the flange, and the flange is fixed to the lower surface of the steering turntable by bolts to facilitate disassembly and maintenance.

[0012] Furthermore, the bolts are distributed along the central circumference of the steering turntable, and the number of the bolts is at least four.

[0013] Furthermore, the motor is electrically connected to the power supply. The cable electrically connecting the motor and the power supply is arranged in a pre-buried control pipeline, and the pre-buried control pipeline is located between the mounting base and the mounting hole.

[0014] The beneficial effects of the present invention are:

[0015] The utility model provides a turntable device for underground coal mines, in which a motor and a reducer are installed in a reserved hole for driving, a steering turntable is installed in the reserved hole for the turntable, the output end of the motor is connected to the input end of the reducer, and the rotation speed of the steering turntable is regulated by the motor and the reducer; a flange connection is provided between the output end of the reducer and the steering turntable, thereby improving the steering stability and steering accuracy of the steering turntable and reducing maintenance costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0017] Figure 1 This is a schematic diagram of the connection relationship of the turntable device for underground coal mines in Example 1.

[0018] In the figure, 1-concrete matrix, 2-reducer; 3-motor, 4-gear sleeve, 5-steering turntable, 6-inner roller, 7-embedded control pipeline, 8-outer roller, 9-power supply, 10-annular support plate. DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will be combined with the drawings of the embodiments of the present invention to clearly and completely describe the technical solutions of the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0020] Example 1

[0021] A rotary table device for underground coal mines, such as Figure 1 As shown, it includes a concrete base 1, which is a ring-shaped column structure. The concrete base 1 is located in a mounting hole dug in the tunnel floor. The upper surface of the concrete base 1 is lower than the upper surface of the tunnel floor. The hollow area in the middle of the concrete base 1 is a reserved driving hole. A pre-buried control pipeline 7 is provided between the concrete base 1 and the mounting hole. A cable electrically connected to a power supply 9 is laid in the pre-buried control pipeline. The space formed by the upper surface of the concrete base 1 and the mounting hole is a reserved hole for the turntable.

[0022] The system further includes a motor 3, the output of which is connected to the input of a reducer 2 located above it. The motor 3 drives the reducer 2. The motor 3 and reducer 2 are mounted within a pre-reserved drive cavity. The motor 3 is electrically connected to a power source 9 via a cable embedded in a pre-buried control line 7. A gear sleeve 4 is located above the output of the reducer 2. The reducer 2 drives the gear sleeve 4, which is connected to a flange. The flange is secured to the center of the lower surface of the steering turntable 5 by bolts, wherein four bolts are distributed circumferentially along the center of the steering turntable 5. The steering turntable 5 is mounted within the pre-reserved cavity. The upper surface of the steering turntable 5 is flush with the upper surface of the roadway floor. Four inner rollers 6 and eight outer rollers 8 are rotatably mounted on the lower surface of the steering turntable 5. The four inner rollers 6 are equiangularly distributed circumferentially along the center of the lower surface of the steering turntable 5, while the eight outer rollers 8 are equiangularly distributed circumferentially along the center of the lower surface of the steering turntable 5. An annular support plate 10 is coaxially positioned below the steering turntable 5. Its outer diameter is equal to that of the steering turntable 5 and is fixed to the upper surface of the concrete base 1. An inner and outer annular guide rails are coaxially positioned on the upper surface of the annular support plate 10. Four inner rollers 6 rotate along the inner and eight outer rollers 8 rotate along the outer guide rails. The inner diameter of the annular support plate 10 is equal to the diameter of the drive hole. The rotational axes of the motor 3, reducer 2, and steering turntable 5 are coaxial.

[0023] Instructions for Use: A cylindrical foundation pit with a diameter of 5000mm and a depth of 400-500mm is constructed at the starting and ending points of the trackless rubber-tyred vehicle. The cylindrical foundation pit serves as the installation hole. Pre-buried control piping is installed at the bottom of the pit. A cable is laid within the pre-buried control piping, one end of which is electrically connected to an external power source. A 600mm cylindrical mold is then inserted into the center of the installation hole. Concrete is poured and, after the concrete has solidified, the mold is removed, forming a concrete base with a circular column structure. The hollow area in the center of the concrete base serves as a drive hole. The other end of the cable is located in the drive hole in the center of the concrete base. The space formed between the upper surface of the concrete base and the installation hole serves as the turntable hole. Install the underground coal mine turntable device and put it into operation. When the unloaded trackless rubber-tyred vehicle reaches the steering turntable, the motor and reducer are used to control the rotation of the steering turntable. The rotation of the steering turntable drives the vehicle, thus achieving steering.

[0024] Although the present invention has been described in detail with reference to the accompanying drawings and in conjunction with preferred embodiments, the present invention is not limited thereto. Without departing from the spirit and essence of the present invention, persons of ordinary skill in the art may make various equivalent modifications or substitutions to the embodiments of the present invention, and such modifications or substitutions shall fall within the scope of the present invention. Any changes or substitutions that can be easily conceived by persons skilled in the art within the technical scope disclosed in the present invention shall fall within the scope of protection of the present invention.

Claims

1. A turntable device for underground coal mines, comprising a mounting base, characterized in that: The mounting base is a ring column structure, and the mounting base is installed in the mounting hole of the tunnel floor. The upper surface of the mounting base is lower than the upper surface of the tunnel floor. The hollow area in the middle of the mounting base is the drive reserved hole, and the space formed by the upper surface of the mounting base and the mounting hole is the turntable reserved hole. It also includes a motor, the output end of the motor is connected to the input end of the reducer, the motor and the reducer are installed in the drive reserved hole, and the motor is located below the reducer; the output end of the reducer is connected to the steering turntable through a flange, the reducer is located below the steering turntable, and the steering turntable is installed in the turntable reserved hole; the rotation axes of the motor, reducer and steering turntable are coaxial.

2. A turntable device for underground coal mines according to claim 1, characterized in that: An annular support plate is coaxially arranged below the steering turntable, and the annular support plate is rotatably connected to the steering turntable.

3. A turntable device for underground coal mines according to claim 2, characterized in that: The annular support plate is fixed to the upper surface of the mounting base.

4. A turntable device for underground coal mines according to claim 2, characterized in that: The inner roller and the outer roller are respectively installed on the lower surface of the steering turntable, and the inner annular guide rail and the outer annular guide rail are coaxially arranged on the upper surface of the annular support plate. The inner roller is installed in the inner annular guide rail, and the outer roller is installed in the outer annular guide rail.

5. The turntable device for underground coal mines according to claim 1, characterized in that: A gear sleeve is provided above the output end of the reducer, the gear sleeve is connected to a flange, and the flange is fixed to the lower surface of the steering turntable by bolts.

6. A turntable device for underground coal mines according to claim 5, characterized in that: The bolts are distributed along the central circumference of the steering turntable, and the number of the bolts is at least four.

7. The turntable device for underground coal mines according to claim 1, characterized in that: The motor is electrically connected to the power supply.

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